When a sentence is in the negative form and the speaker wants to list several things, "or" should be used. For example,

She doesn't like math or languages. (She doesn't like math. And she doesn't like languages.)

I don't want a car or a bike. (I don't want a car. And I don't want a bike.)

How about negative questions? Should I use "and" or "or"?

I want to imply that: He is immune to a cough. And he is also immune to a fever.

Isn't he immune to a cough and/or a fever?

I want to imply that: She is interested in math. And she is also interested in languages.

Isn't she interested in math and/or languages?

  • Are you trying to say perhaps "She doesn't like math or foreign languages"?. Yours sounds bit odd.
    – user17814
    Oct 9, 2020 at 20:45

1 Answer 1


In these two cases use "and". But I would recommend adding "both" to them to emphasise that the initial words apply to two items. Thus making: "Isn't he immune to both a cough and a fever?" and "Isn't she interested in both maths and languages?". (For UK English I would use "maths" not "math".)

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